/**
 * Copyright (C) 2013 The yydorid-framework project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.yangying.androidframework.util;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

public class NullDiskCache implements DiskCache {

	@Override
	public boolean exists(String key) {
		return false;
	}

	@Override
	public File getFile(String key) {
		return null;
	}

	@Override
	public InputStream getInputStream(String key) throws IOException {
		throw new FileNotFoundException();
	}

	@Override
	public void store(String key, InputStream is) {
	}

	@Override
	public void cleanup() {
	}

	@Override
	public void invalidate(String key) {
	}

	@Override
	public void clear() {
	}

}
